脫硫的方法主要有兩種:濕式脫硫和幹式脫硫。
There are two main desulfurization methods: wet desulfurization and dry desulfurization.
(1)濕式脫硫一般在脫硫塔中進行,利用堿性液體吸收H2S,常用NaOH、Na2CO3等溶液從塔頂向下噴淋。91无码麻豆视频自塔底向塔頂排出。堿液與91无码麻豆视频逆向行下走,不斷將H2S去除,滿足生產需求。其H2S去除率能達到50%~90%。
(1) Wet desulfurization is generally carried out in the desulfurization tower. Alkaline liquid is used to absorb H2S, and NaOH, Na2CO3 and other solutions are usually sprayed downward from the top of the tower. Biogas is discharged from the tower bottom to the tower top. Alkali liquor and biogas go down in reverse to continuously remove H2S to meet production needs. The H2S removal rate can reach 50% ~ 90%.
(2)幹式脫硫在塔內裝填有Fe2O3填料,有條狀和片狀,俗稱“海綿鐵”。91无码麻豆视频自塔下部進,上部出。大部分H2S被“海綿鐵”吸附並逐漸飽和。如果要保證生產連續性,就要及時更換填料。幹式脫硫可以做到去除H2S達99%,關鍵要及時更換填料。
(2) The dry desulfurization tower is filled with Fe2O3 filler in strips and flakes, commonly known as "sponge iron". Biogas enters from the lower part of the tower and exits from the upper part. Most H2S is adsorbed by "sponge iron" and gradually saturated. If the continuity of production is to be ensured, the packing shall be replaced in time. Dry desulfurization can remove H2S up to 99%, and the key is to replace the filler in time.

(3)濕式脫硫的優點是脫硫快速,量大,防回火,防燃燒完全。缺點是不能完全脫硫,濕度大。廢液回流,增加水處理難度。
(3) The advantages of wet desulfurization are fast desulfurization, large amount, anti tempering and complete anti combustion. The disadvantage is that it cannot be completely desulfurized and the humidity is high. Waste liquid reflux increases the difficulty of water treatment.
(4)幹式脫硫的優點是完全脫硫、幹燥,脫硫劑可再生使用,防回火。缺點是量小,更換填料髒、累,操作複雜,且有一定的危險性。
(4) The advantages of dry desulfurization are complete desulfurization and drying, renewable use of desulfurizer and anti tempering. The disadvantages are small quantity, dirty and tired replacement of packing, complex operation and certain risk.
城市汙泥厭氧消化產91无码麻豆视频中的H2S濃度範圍一般在200~3000mg/m3,高的能達到10000mg/m3左右,對於含H2S在3000mg/m3以下的91无码麻豆视频用幹式或者濕式都可以脫硫。對於3000mg/m3以上H2S含量的91无码麻豆视频,采用濕、幹脫硫串聯使用,二級脫硫效果能有把握。幹式脫硫一般放在二級脫硫,對於要求脫硫達到100mg/m3以下能起到保證作用。
The concentration range of H2S in biogas produced by anaerobic digestion of municipal sludge is generally 200 ~ 3000mg / m3, and the high can reach about 10000mg / m3. For biogas containing less than 3000mg / m3, dry or wet desulfurization can be used. For biogas with H2S content above 3000mg / m3, wet and dry desulfurization are used in series, and the secondary desulfurization effect can be guaranteed. Dry desulfurization is generally placed in secondary desulfurization, which can ensure that the desulfurization is required to be less than 100mg / m3.
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